Drove our Newell through snow in November of 2009 in Idaho, and Washington. Handled great! We only weigh in at around 29,000 lbs, but never had any concern with traction, or sliding. Here are a few pix and a YouTube video link of a short video I made while driving in this same snow:
As "interesting" as it was driving in the snow, and I did learn a lot about my coach during a very frigid 2 weeks in sub freezing weather, I really, really prefer the weather as displayed in my "avatar".....S&T weather (short pants and t-shirt).